Catalytic, Asymmetric Michael Reactions of Cyclic Diketones with β,γ-Unsaturated α-Ketoesters
作者:Michael A. Calter、Jun Wang
DOI:10.1021/ol900586f
日期:2009.5.21
Newly synthesized cinchona alkaloid-derived pyrimidines function as effective asymmetric catalysts for the Michael reaction between cyclicdiketones and β,γ-unsaturated α-ketoesters. The reactions of electrophiles with either aryl or alkyl γ-substituents give 64−99% yields and 94−99% ee.